期刊
NANO LETTERS
卷 11, 期 10, 页码 4415-4420出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl202597n
关键词
Surface plasmon; nanocrystal; indium tin oxide; spectroelectrochemistry; doping
类别
资金
- U.S. Department of Energy (DOE) [DE-AC02-05CH11231]
- Laboratory Directed Research and Development Program
- Chancellor's Fellowship for Graduate Study
Localized surface plasmon absorption features arise at high doping levels in semiconductor nanocrystals, appearing in the near-infrared range. Here we show that the surface plasmons of tin-doped indium oxide nanocrystal films can be dynamically and reversibly tuned by postsynthetic electrochemical modulation of the electron concentration. Without ion intercalation and the associated material degradation, we induce a > 1200 nm shift in the plasmon wavelength and a factor of nearly three change in the carrier density.
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